Zobrazeno 1 - 10
of 42
pro vyhledávání: '"D′Souza, Ransell"'
Achieving high valley degeneracy (i.e. "band convergence") in a material usually results in considerably enhanced thermoelectric properties. However, it is still unclear why this strategy of designing efficient thermoelectric materials is so successf
Externí odkaz:
http://arxiv.org/abs/2205.13897
Publikováno v:
Phys. Rev. B 102, 115204 (2020)
We present a first principles based model of electron-phonon scattering mechanisms and thermoelectric transport at the L and $\Sigma$ valleys in <200b>$p$-type PbTe, accounting for their thermally induced shifts. Our calculated values of all thermoel
Externí odkaz:
http://arxiv.org/abs/2008.10343
Publikováno v:
Journal of Applied Physics 126, 214302 (2019)
Two-dimensional group IV transition-metal dichalcogenides have encouraging thermoelectric applications since their electronic and lattice properties can be manipulated with strain. In this paper, we report the thermoelectric parameters such as electr
Externí odkaz:
http://arxiv.org/abs/2001.10514
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Enhancement of thermoelectric figure-of-merit of Graphene upon BN-doping and sample length reduction
Autor:
D'Souza, Ransell, Mukherjee, Sugata
Using first-principles density functional perturbation theory based calculations of length-dependent lattice thermal conductivity (\k{appa} L ) and using our previously calculated results (Phys Rev B 95 085435 (2017)) of electrical transport, we repo
Externí odkaz:
http://arxiv.org/abs/1809.00823
Autor:
D'Souza, Ransell, Mukherjee, Sugata
Publikováno v:
Phys. Rev. B 96, 205422 (2017)
The phonon dispersion, density of states, Gr\"{u}neisen parameters, and the lattice thermal conductivity of single- and multi-layered boron nitride were calculated using first-principles methods. For the bulk {\it h}-BN we also report the two-phonon
Externí odkaz:
http://arxiv.org/abs/1711.02366
Using combination of Density Functional Theory and Monte Carlo simulation, we study the phase stability and electronic properties of two dimensional hexagonal composites of boron nitride and graphene, with a goal to uncover the role of the interface
Externí odkaz:
http://arxiv.org/abs/1707.02778
Autor:
D'Souza, Ransell, Mukherjee, Sugata
Publikováno v:
Physical Review B 95, 085435 (2017)
We report the transport properties of monolayer and bilayer graphene from first principles calculations and Boltzmann transport theory (BTE). Our resistivity studies on monolayer graphene show Bloch-Gr${\rm \ddot{u}}$neisen behavior in a certain rang
Externí odkaz:
http://arxiv.org/abs/1703.00224
Akademický článek
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Autor:
D'Souza, Ransell, Mukherjee, Sugata
Publikováno v:
Physica E,81 (2016), 96-101
We present first principles study of thermoelectric transport properties of sandwiched heterostructure of Graphene (G)/hexagonal Boron Nitride (BN)/G, based on Boltzmann transport theory for band electrons using the bandstructure calculated from the
Externí odkaz:
http://arxiv.org/abs/1603.06555